Transmission mechanism



sept. y29, 1931.

5 Sheets-She Filed Malozh- 30, 1929 o IN VEN TOR.

Sept.- 29, 1931. w. BRooKlNs TRANSMISSION MECHANISM Filed March 30, 1929 5 Sheets-Sheet R. 0 m m N l @5MM W3C.

ATToRN sept. 29, 1931.

- L. BROOKINS TRANSMISSION MECHANISM Filed March so, 1929 5 sheets-sheet s n .YK

14 manaf,

INVENTOR.

A TTORNEY @Mac Sept. 29.193L

W. L. BROOKINS TRANSMISSLON MECHANIS'M Filed March 30, 1929 5 Sheets-Sheet 4 ...v am QQ \ve\ Sept. 29, 1931. w. L. BRooKlNs TRANSMISSION MECHANISI Filed March so. 192'9 5 Sheets-Sheet 5 NS .om 9 O wm x h um IN1/Enroll.

ATToR/vgv Patented Sept. 29, 1931 WILLIAM I... BROOKINS, F CIEVELAND,`OHIO i v TRANSMISSION MECHANISM Application ined March 3o, l1922i). serial No. 351,344.

rlhis invention as indicated relates toa transmission mechanism' lvlore' particularly this invention relates to a transmission mechanism having a control mechanism whereby 45 variations of speed and direction of 'drivev may be brought about through regulating the'speed 'and direction of `motion of the gears with which the main power transmitting gears coact. Various embodiments may be made of the inventive idea. Thus, a planeta-ry drive may beusedwherein the normally stationary member maybe so connected with a control -that Aa different speed A reaction may be brought about by controlling thez speed of such control device, and, furthermore, the powerA transmitted through such control may be carried back tothe driven shaft andv thus utilized to supplement the normal speed ofthe regular drive of the transmission.

In like manner the `control may beused to reduce the amount of speed below that which would ordinarily be transmitted, byl

changing the speed or the relative direction a5V of motion of the control. w

Also an irreversible drive may be used which permits the use of an infinitely variable frictionV disk speed changing mea-ns for the control device. To the accomplishment ,ne ofthe foregoing and' related ends, said invention, then, consists of the means here'- inafter fully described and particularly pointedV out in the claims.

* The annexed drawings and the following 3;; descriptionset forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in whichVr the n principle of the invention may be used.

4e In said annexed drawings: Y

Fig. 1 is a side elevation of a transmission mechanism embodying the principles of my invention; Fig. 2 is a topplan view ofthe apparatus shown in F ig.` 1`with thecover portioirof the casing removed; F 3 is a trans-verse sectional Vvie-w takenalongfthe lines 3f?) shown in Fig. 2, looking inthe direction of the arrows Fig. 4 is a top plan I* view of another form of transmission mechanism embodying the principles of my invention; Fig. y5 is a top planview showing" still another form of transmissionmechanism embodying the principles of my invention; Fig. 6 is a transverse lsectional view taken along the lines 6 6 shown inv Fig. 5,' looking in the direction of the arrows; Fig.. 7 is a diagrammatic view of the selective sleeve showing `the positions of the various.

sizes of clutch members therein;*FigrSVisf a top plan view showing `the transmission mechanism` disclosed in Fig. 5 coupled with,A a friction disk control mechanism of the type shown in Fig. 2. Y As is clearly shown in Fig. 1 the apparatus comprises a base l'upon which is sup-k porteda transmission casing 2 by means of standards 3, 4, the casing being adapted to be closed by a cover section 5 suitably secured thereto by means of fastening bolts 6 positioned at intervals around projecting `flanges y7, 8, upon the base and cover plate respectively. The kdriven shaft 9 carries a gear 11 at its inner end centrally within the gear housing 12. The drive shaft` 13 is positioned ina-lignment with the driven shaft 9 and carries upon its inner end a gear 14.

`A planetary transmission spider is rotatably supportedupon the driven shaft and drive shaft immediately adjacent the gears 11 and 14 respectively, said spider comprising a hub portion 15 carrying a plate lsleeved upon e the drive shaft and a hub portionV 17 andv a plate 18 sleeved vupon the driven shaft. The

lplates `16and Y'1S are provided with alignedV apertures 19 and 21 respectively through which studs 22 are engaged, said studs'carr ing airsof inions`23 24 res ectivel .Y a; P P a 7 P y The pinions23 may comprise two oppositely d disposed pairs-of pinions, as shown, or thr'ee or more pairs of pinions as may be found` desirable. y Y .y

The pinions 23 lie in the planewith theV gear` 11 and in constantmesh therewith and the pinions 24lie in the plane ofthe gear 14 and are in constant mesh therewith. The pinions 28and124fare integrally con-v nected by shortl sleeve sections'25' which causesthe same to rotate in unison.

Immediately adjacent the hub 17 of thel f spider a worm wheel 26"is positioned,"said worm wheell being integrally connected with the hub 17 by means of the sleeve 27. The

`worm wheel 26 is adapted to be driven by a worm 28 mount-ed on a transverse shaft 29, which is suitably ljournalled in bearings 31, 32'7 mount-ed on the side walls of the housing and at its free end is sup orted in a bearingV 33 carried on a standart 34 secured to the base plate 1 byfmeans of a slotted foot member 35 engaging over an upstanding lug 36 on the base plate and being secured to the base plate by means of bolts 37 extending through suitable apertures in the flanges 38. Slidably engaged upon the'shaft 29 and suitably keyed thereto is a' friction drive Wheel 41 provided with a peripheral groove 42 withinvvhich is seatedra band of suitable friction material 43 such as fiber, rubber composition, or the like. i

integrally therewith adapted to be engaged by a fin 45 on a shifting member 46. VThe shifting member 46 is slidably engaged on parallel guide bars 40 and is provided with I a suitablelever extension r47 supported on a llink 48 pivotally secured to apiVOt pin 49v mounted on a bracket 51 secured to the side of the housing 12. The band 43 on the friction wheel is positionedin frictional contact with a friction disc 52 of large size affording an adequate numberY of positional adjustments .for suitably varying the speed ofthe friction wheel. The friction disc is carriedr on a counter-shaft 53 mounted in suitable bearings 54, 55 in the rearward portion of the casing and carri-es a large gear 56 firmly secured thereto. Said gear is in constant engagement with a, gear 57 mounted on the drive shaft 13. By means lof a coil spring within a recess at the rear of the disc hub, the friction disc is kept in resilient contact with the friction wheel.

The transmission casing has a suitable enlargement 58 to cover the gears last described. The drive shaft is provided with suitablebearings 59, 60 in the casi-ng walls.

lVith an apparatusconstructed as just described, the operation ofthe device will be as follows. When powerris transmitted toV the drive shaft 13, the gear 14 will be actuated. and will transmit the ypower at a suit able` ratio through the pinions 23, 24 to gear 11 onthe driven shaft 9. The amount of power so delivered tothe gear 14 is dependant, upon .the amount of motion trans- -mitted to the spider by means of the worm 28 ing-engagement* with .the worm wheel 26 0n the sleeve 27.0f the yoke 17. The direction and amount of motion transmitted to the yspider and its associated pinions is dein this embodiment of my invention permits its use on automobiles without danger of The friction wheel has a yoke 44 formedy reversely driving the mechanism through the driven shaft when coasting on hills.

The friction wheel receives its power from the friction disc 52 which is driven through the gear 57 on the drive shaft 13 and which drives the friction disc through the gear 56. The friction wheel may be driven in either direction depending upon which side of the center of thefriction disc 6 it is in Contact with and the amount of speed transmitted from the friction wheel will depend upon its distance from the center of a friction disc.

As it is near the center of the disc it will receive less speed than when positioned near the periphery of such disc. Through the shifting of the friction wheel therefore any desired amount ofspeed may be transmitted to the spider and its series of pinions and the speed of the spider and its pinions relative to its associated gears will directly affeet 'the amount of speed transmitted through said pinions to the gear 11 on the driven shaft. Thus, by changing the position of the friction wheel onk the friction disc a wide variety of speeds may be imparted to the spider, and by changing such speed relatively to the gears, the direction of motion aswell as the speed of the driven shaft may be controlled. f

Instead of using a. variable control to make a. change in the ratio between the drive and driven shafts, a mechanism may be provided carrying a gear 65 on its inner end in con- Y.

stant mesh with a gear 66 on a stub shaft 67. The gear 66 is integrally connected by means of a sleeve 68 and a gear 69 which is in constant mesh with a gear 71 sleeved upon the inner end of the drive shaft and being integrally connected with a yoke 72 carrying beveled pinions 73. The beveled pinions 73 engage on one side with a bevel drive wheel 74secured to the inner end of the drive shaft and on the other side with a bevel pinion 75 secured to the inner end of the driven shaft With an apparatus constructed in the f manner shown in Fig. 4, the action 'takes place as follows. rWhen driving the spider and its associated gears in its normal neutral direction, that is, in the same direction as the drive member, ata speed less than its normal ratio, the driven member 76 will rotate at a decreased speed in the opposite Vdirection from the drive member 62.l

When driving the spider in its normal neutral direction at a speed greater than its normal ratio, the driven member 76 vwill.

ion

rotate at a decreased speed inthe same directiona'sthat ofthe drive shaft 62.-

-; In conjunction with. the friction disc mechanismillustrated in Figs. 1, '2,- and 3, a transmission mechanism rmay A'be emplo `ed such as is shown separately-in Fig. 5l an `in fullcombination in Fig. 8, which is capableY Ofbeing adjusted,A to a'nr almost infinite `number, of combinations ,off speedv through Y the provision of i an internal gear `drive system 81 superimposed upon :the yplanetary gear system shownin Figs. 1 to 3. Thus the drive shafft -13Will havea Worm Wheel 26 sleeved up'on it adjacent ther cross frame member 82 which Worm Wheel will be `operated byv means of the cross-shaft 29. YThe drive shaft carries -"on its innerend a gear 83 in constant meshfwithpinions 84 on the spider 85, thehub '86 of Whichspider is' rotatably engaged on the drive shaft land has splined thereona shiftable notched locking plate 87 adapted to be moved by: means of la yoke engagedwith theshifting collar 88.

#-When moved i-nto avforvvard position the plate will .engage Va notchedring 89 formed on the frame 91 housing the transmission. The. pinions `84C carry pinions 92v on their inner ends which are in'alignment With a gear 93 on the inner end ofan intermediate shaft 94. kThe intermediate driven` shaft carries a clutch member 95 at its free end. Sleeved upon' the intermediate shaft is a tubular member 96 carrying a clutch member 97 Tat its/free end .and being integrally secured to the disc 92 of the spider by means of an enlarged hub portion 99. The discs and 92 are connected by pins 101 Which support the integrally connected pinions l84: and 90. Sleeved uponthe'tubular member connected Withy the spiderf is a sleeve 102 which carries at its free end a .clutchmem-v ber1l103 and at its opposite end a substantially semi-circular shell 81 forming a support for. the internal gear 105.

Y 4.lfhe sleeve 102is rotatably supported in` a bearing `106.project-inginwardly fromla crossrwall ,107 of the housing. .y Said bearing-carries keys-,108 with which a shiftable locking collar 109 is slidingly engaged, said locking collar'is adapted to yslide forwardly andjinterlock-With lugs 111 on the shell of the internal gear member. The driven shaft 112 is journaled in an extension -113at the rearward portion ofthe housing and is provided at its end vkWithin `the housing with a plurality of splines.114,which areiengaged by a sliding selective sleeve or clutch member 115. A shifting yoke`116r-serves to` move the'clutchl member linto various positions of adjustment.v n K The sliding selectiveclutch-member has four clutch elementsinternally 4of the same,-

the member 117 vat its free endserving to engage rthe` clutch member 103 to rotatel thek drivensshaft in .reverse ortoward theleft at Aa ratio, inthe gear size's shown, oneeighth to 1. Intermediately upon"l said, clutch l.member is provided avsecond clutch member 118 adapted to engage with` the clutch member 97 on the spider to turnthe driven shaft tothe right at the ratio, in thefgear sizes shown, of one-fifth (1/5) to one. Next in position toward the driven shaft is an internal clutch member 119 Which is adapted to engage the clutch member on the .intermediate shaft when the selective clutch meniberis moved toward the driven shaft andserves to drivethe driven shaft tol ther right at a ratio, in the gear: sizes shown, of one-fourth (l) to one.- When the selective clutch member is shifted toward the spiderfto its extreme limit-of. motion, the clutch kmember 119 will engage with" the clutch .member 97 and the clutch, member 121 on the inner end of the selective clutch member will then simultaneously engag'etheclutch member 9,5. When thus-engaged, the drive Will be direct Yfrom 'the drive `shaft to the driven shaft. j Y

Thus five positive speeds are provided for by mechanism Whichmay be cou led-as indicated, and inthe gear sizes s own, will operate as follows: Byholding vthe spider,Y With the clutch member 87 in engagement with the notches 89, the driven shaft 112 turns to the rightYone-fourth (l) revolu tion to one revolution of the drive shaft 13, andthe internal' gear 105 turns to the left one-eighth (1/8) of a revolution to one revolutionrof thedrive shaft. e n y By holding the internal gear by means of a locking collar 109, the spider lution to one revolution ofthe drive shaft 13, and a drivenshaft 112 turns tothe right one-third (1/3) of a revolution to one revolution of the drive shaft.

Byi shifting the selective clutch memberv 115 toward the right' as shown in Figs. 5? and8,- to -its extreme limit of motion,all the parts will turn to the'rightv and there' will be? no rotation of anyof thegearsupon v each other, and the drive will be direct.

. By means of the friction disc drive illus trated in Figs. l, 2, 3 and 8, the. spiderk may bedriven in either direction and vat sub. stantially any desired speed Within. thek limits of the friction drive ratios provided.`

When the spider is driven more than vesiXteenths (g') revolutions to lone revo.y lution of the drive shaft inan opposite .direction, a reversal o f the direction of the driven shaft is caused. f

When the spider is driven the same number of revolutions inthe same direction kas the drive shaft, no pinions rotate vand thedriven shaft has the same direction and speed as thedrive shaft. When the spider` is kdrivenin the same direction as the drive' shaft, the driven shaft isv increased in nor-l y Y gards the mechanism herein disclosed, pro'-` vided' themeans stated -by any of the fol lowing claims or theA equivalent of such stated'ineans be employed. Y i Y AI therefore particularlypoint out and distinctly claimas-my invention: v' -l l 1. In a'transmission mechanism a casing, a bearing sleeve fiXedly supported Within said casing', a drive shaft mountedy Within said bearing sleeve, 'a gear at the free end ofsaid drive shaft, a'driven shaft, a gear at 'the Vfree end of said driven shaft, a spider comprising afpaii of-platesprovided WithY hubs, one of lsaid'hubs being supported on the fixed bearing sleeve of the driving shaft, said plates carrying pinions meshing respectively WithA said gears on said drive `shaftvand,driven shaft, said pinions being connected toeach other in pairs, a friction dis c,gm'eans for driving said disc from said drive shaft,va friction wheel on a crossshaft `carrying av Worm, and a Worm Wheel secured to vthespider hub adapted to rotate the -sanie andmodify the driving action through thepinions inspeedV and directionv inac'cordance with the speed andi direction. of said spider.

2.1 In a transmission'mechanism a casing, a bearing sleeve'iiXedly" supportedwithin said casing, a drive shaftV mounted Within said bearing sleeve, a 'gear at the Yfree end of said drive shaft, a driven shaft, a.- gear at the free endv ofsaid driven shaft, a spider ycon'iprising a pair of plates` provided With pinionsintermediate theesame, said plates carrying hubs, one of said hubs having a Worm Wheel secured thereto, and one of said.

hubs being rotatably 'mounted on said fixed vbearing sleeve of said drive shaft, said'l pinions lof saidspider meshing respectivelyl With said gears 'on said drive shaft and drivl en shaftfsaidpinions being connected to each other iii-pairs, a countershaft, a friction disc mounted on c said countershaft,

l means for driving said countershaft from said-'drive shaft, and a friction'wheel on a crossshaft carrying a Worm, said Wormrv meshing with vsaid Wormrwheel on theispider-andadapted to rotate the same and `modify the driving action through the pinions in speed' and direction in accordance with the vspeed-and direction of'said spider, and means for shifting saidl friction Wheel upon said friction-disc,

In a transmission mechanism, a casing,

a drive shaft, a gear at the: free end of said drive shaft, a driven shaft, a gear at the free end of said drivenishaft,aspider carry-. ing pinions meshing respectively With said f gears on said :driveshaft and drivenvshaft,V

saidpinions being connected to'y each other in pairs, means for lockingfs'aidspid'er tol the casing Ato prevent rotation'thereof, a countershaft, 4aifriction disc, vmounted on. saidcountershaft,'a spring'about said countershaft to resiliently=`hold saiddisc in a for-- Ward-position, means for driving said countk ershaft from said drive shaft', a friction Wheel on a cross-shaft carrying afwormg'fand a wormpwheel 'on'the-'spider adaptedfto-rdy tate the same and modify the dri-ving action' free end, a spider sleeved upon saidl driveV and driven shafts, a ldriven sleeve rotatably supported .upon said' driven shaft' andY connected with saidspider 'at-one end andfhaving a clutch member atn its opposite "end, and a second drivenfsleeve rotatably mounted upon said first sleeveland carrying an internal gear upon one end'and a clutch` mem-1l bei1 on its opposite end',`a 'shiftable Vmember for locking'said second' sleeve -to said'casing and a "selective clutch ,member adapted to be shifted to engage the clutch members on said driven members] f* 5. In a transmission mechanism a casing,

a drive shaft carryinga pinion at its free end, a driven shaft carrying a pinion at its free end, a spider'sleevedv upon said drive and driven shaft, a driven sleeve rotatably supportedupon said driven shaft and con-lv nected with said spiderat one end and hav ing a clutch' member at its opposite end,

Vand a second driven sleeve rotatably mount-r ed' upon said'first` sleeve and carryingan internal gear upon one end and a yclutch member on its: opposite end, a 'shiftablemember for locking saidfsecond sleeve tol said casing-and `va selectivefclutch member adapted to be shifted togengage the clutchmembers on said driven memberand'means for driving *said* .spider`- from-b saidV drive' shaft.

supportedA` upon said driven shaft and connected'v withy saidspider atlone end and having a clutch member at itst opposite end, andv a second` driven sleeve rotatably mountedv upon said first-sleeve and carrying an internal gear upon one end and a clutch mein# ber on its opposite endg*a'shiftable'member for locking said second' sleeve tosaid'casing and aselective 'clutch' member? adapted to be shifted to engage the clutchmembersonl said driven member, and irreversible. means iis for driving said spider f`from` said drive shaft. l

7. In a transmission mechanism, a casing, a drive shaft carrying a pinion at its free end,a driven shaft Carrying a pinion at its free end, a spider sleeved upon said drive and driven shafts, a driven sleeve rotatably supported upon said driven shaft` and oonneeted With said spider at one end and having a clutch member at its opposite end, and a second driven sleeve rotatably vmounted upon said first sleeve and carrying an internal gear upon one end and a clutch member on its opposite end, and a selective clutch member adapted to be shifted to engage the clutch members on said driven member, means for driving said spider from said drive shaft, and unitarymean's for releasing said spider from its drive and looking said spider against rotation through` engagement With said easing.-

Signed by me this 27th day of February,

WILLIAM L. BROOKINS. 

